[英]How to realize this custom popup menu with Material Design Android?
您可以使用ListPopupWindow ,提交自定義適配器,通過它可以控制ListPopupWindow
的每一行的ListPopupWindow
。 至於普通的PopupWindow
你必須提供一個錨視圖,另外你必須在ListPopupWindow
的實例上調用setContentWidth
,它將彈出窗口的寬度設置為其內容的大小。 這是一個你必須付出的小代價,但對於一個小數據集來說並不是什么大問題。 我有這個實用工具方法來檢索行的最大寬度:
public int measureContentWidth(ListAdapter adapter) {
int maxWidth = 0;
int count = adapter.getCount();
final int widthMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
final int heightMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
View itemView = null;
for (int i = 0; i < count; i++) {
itemView = adapter.getView(i, itemView, this);
itemView.measure(widthMeasureSpec, heightMeasureSpec);
maxWidth = Math.max(maxWidth, itemView.getMeasuredWidth());
}
return maxWidth;
}
有一個名為PopupMenu
的小部件,它基本上是一個錨定到特定視圖的菜單。 一個缺點是它默認不顯示圖標。
但是,您可以使用反射並調用setForceShowIcon
來顯示它們。 您需要的代碼是:
由於PopupMenu
錨定到特定視圖,因此ActionBar
項具有actionLayout
屬性。 該布局( action_item.xml
)可以簡單如下:
<Button xmlns:android="http://schemas.android.com/apk/res/android" style="?attr/actionButtonStyle" android:layout_gravity="center" android:text="Show popup" android:textStyle="bold" android:textSize="12sp" android:layout_width="wrap_content" android:layout_height="match_parent"/>
ActionBar
菜單樣式,包含具有上述布局的項目
<menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/popup_item" android:title="Show popup" android:showAsAction="always" android:actionLayout="@layout/action_item"/> </menu>
你的popup_menu.xml
,你將為你的PopupMenu
充氣的布局
<menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/item1" android:title="Item1" android:icon="@mipmap/ic_launcher"/> </menu>
最后,在單擊ActionBar
項目時執行通脹的代碼
@Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_add_item: PopupMenu popup = new PopupMenu(this, item.getActionView()); MenuInflater inflater = popup.getMenuInflater(); inflater.inflate(R.menu.popup_menu, popup.getMenu()); // Use reflection to invoke setForceShowIcon try { Field[] fields = popup.getClass().getDeclaredFields(); for (Field field : fields) { if ("mPopup".equals(field.getName())) { field.setAccessible(true); Object menuPopupHelper = field.get(popup); Class<?> classPopupHelper = Class .forName(menuPopupHelper.getClass().getName()); Method setForceIcons = classPopupHelper .getMethod("setForceShowIcon", boolean.class); setForceIcons.invoke(menuPopupHelper, true); break; } } } catch (Exception e) { e.printStackTrace(); } popup.show(); return true; } return super.onOptionsItemSelected(item); }
請注意,要在菜單中獲取多行文本,您還需要對彈出菜單項使用actionLayout
。
使用彈出列表片段 。 關於片段的好處是你可以輕松地為它們制作動畫 (如果你不理解片段,我建議先閱讀Fragment Introduction )
如果要完全控制彈出內容,請參閱Dialog Fragment
我有同樣的問題。但最后我在自己的解決方案中發現我正在分享我的代碼。 希望能幫到你。
popupWindowDogs = popupWindowDogs(); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub // popupWindowDogs.showAsDropDown(v, -5, 0); popupWindowDogs().showAtLocation(v, Gravity.CENTER, 0, 0); } }); // Detect touched area detector = new SimpleGestureFilter(this, this);
}
public PopupWindow popupWindowDogs() { // initialize a pop up window type PopupWindow popupWindow = new PopupWindow(this); // the drop down list is a list view final ListView listView = new ListView(this); // set our adapter and pass our pop up window contents listView.setAdapter(dogsAdapter(popUpContents)); // listView.setBackgroundColor(Color.DKGRAY); listView.setBackgroundResource(R.drawable.ss4); listView.setPadding(0, 0, 0, 10); listView.setDivider(null); try { listView.setOnScrollListener(new OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { View c = listView.getChildAt(0); String cc = listView.getChildAt(0).toString(); int scrolly = -c.getTop() + listView.getFirstVisiblePosition() * c.getHeight(); /* * Toast.makeText(getApplicationContext(), scrolly + "", Toast.LENGTH_SHORT) * .show(); */} @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } }); } catch (Exception e) { Toast.makeText(getApplicationContext(), e.toString() + "", Toast.LENGTH_SHORT) .show(); } listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) { try { // TODO Auto-generated method stub Context mContext = v.getContext(); Swipetouch mainActivity = ((Swipetouch) mContext); // add some animation when a list item was clicked Animation fadeInAnimation = AnimationUtils.loadAnimation(v.getContext(), android.R.anim.fade_in); fadeInAnimation.setDuration(10); v.startAnimation(fadeInAnimation); // dismiss the pop up mainActivity.popupWindowDogs.dismiss(); // get the text and set it as the button text String val = (String) arg0.getItemAtPosition(arg2); // Toast.makeText(mContext, val, Toast.LENGTH_SHORT).show(); if (val.equals("Signup Now")) { Intent ii = new Intent(getApplicationContext(), Registration.class); startActivity(ii); stopService(new Intent(Swipetouch.this, MyService.class)); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Login")) { Intent ii = new Intent(getApplicationContext(), MyLoginActivity.class); startActivity(ii); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Exit")) { finish(); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Friends")) { Intent ii = new Intent(getApplicationContext(), MyLoginActivity.class); startActivity(ii); } else if (val.equals("Exit")) { stopService(new Intent(Swipetouch.this, MyService.class)); finish(); } } catch (Exception e) { Toast.makeText(Swipetouch.this, e.toString(), Toast.LENGTH_SHORT).show(); } } }); // some other visual settings popupWindow.setFocusable(true); popupWindow.setWidth(250); // popupWindow.setHeight(300); popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT); // set the list view as pop up window content // SET WALLPAPER IMAGE /* * popupWindow.setBackgroundDrawable(getWallpaper()); popupWindow.setHeight(300); */ // layout.setBackgroundResource(R.drawable.sshadow); // layout.setBackgroundColor(Color.TRANSPARENT); // popupWindow.setContentView(layout); popupWindow.setBackgroundDrawable(new ColorDrawable( android.graphics.Color.TRANSPARENT)); popupWindow.setContentView(listView); return popupWindow; }
此代碼在我的應用程序中工作。
嘗試這個 :-
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".LocationDetailsActivity">
<item xmlns:tools="http://schemas.android.com/tools"
android:icon="@android:drawable/ic_menu_mapmode"
app:showAsAction="ifRoom"
android:title="@string/title_of_menu"
tools:context=".LocationDetailsActivity">
//the menu list with icon
<menu>
<item
android:id="@+id/action_map_type_normal"
android:orderInCategory="100"
android:icon="some_icon" //place your icon here
android:title="Vacation spots" />
<item
android:id="@+id/action_map_type_satellite"
android:orderInCategory="100"
android:icon="some_icon" //place your icon here
android:title="Friends and family" />
<item
android:id="@+id/action_map_type_hybrid"
android:orderInCategory="100"
android:icon="some_icon" //place your icon here
android:title="Restaurants" />
</menu>
</item>
您可以從這些不同的提供程序中查看教程
http://developer.android.com/guide/topics/ui/actionbar.html
http://www.vogella.com/tutorials/AndroidActionBar/article.html
http://www.androidhive.info/2013/11/android-working-with-action-bar/
所有這些都有很好的示例和源代碼來幫助您
希望這對你有所幫助:)
try {
java.lang.reflect.Field[] fields = popup.getClass().getDeclaredFields();
for (java.lang.reflect.Field field : fields) {
if ("mPopup".equals(field.getName())) {
field.setAccessible(true);
Object menuPopupHelper = field.get(popup);
Class<?> classPopupHelper = Class
.forName(menuPopupHelper.getClass().getName());
Method setForceIcons = classPopupHelper
.getMethod("setForceShowIcon", boolean.class);
setForceIcons.invoke(menuPopupHelper, true);
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
更簡單的解決方案 在.show()方法之前添加它。
try {
Field mFieldPopup=popupMenu.getClass().getDeclaredField("mPopup");
mFieldPopup.setAccessible(true);
MenuPopupHelper mPopup = (MenuPopupHelper) mFieldPopup.get(popupMenu);
mPopup.setForceShowIcon(true);
} catch (Exception e) {}
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